/*
 * Copyright 2020 Adobe. All rights reserved.
 * This file is licensed to you under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License. You may obtain a copy
 * of the License at http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software distributed under
 * the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR REPRESENTATIONS
 * OF ANY KIND, either express or implied. See the License for the specific language
 * governing permissions and limitations under the License.
 */
//-----------------------------------------------------------------------------
// COMPILE-TIME OPTIONS FOR DEAR IMGUI
// Runtime options (clipboard callbacks, enabling various features, etc.) can generally be set via
// the ImGuiIO structure. You can use ImGui::SetAllocatorFunctions() before calling
// ImGui::CreateContext() to rewire memory allocation functions.
//-----------------------------------------------------------------------------
// A) You may edit imconfig.h (and not overwrite it when updating Dear ImGui, or maintain a patch/branch with your modifications to imconfig.h)
// B) or add configuration directives in your own file and compile with #define IMGUI_USER_CONFIG
// "myfilename.h" If you do so you need to make sure that configuration settings are defined
// consistently _everywhere_ Dear ImGui is used, which include the imgui*.cpp files but also _any_
// of your code that uses Dear ImGui. This is because some compile-time options have an affect on
// data structures. Defining those options in imconfig.h will ensure every compilation unit gets to
// see the same data structure layouts. Call IMGUI_CHECKVERSION() from your .cpp files to verify
// that the data structures your files are using are matching the ones imgui.cpp is using.
//-----------------------------------------------------------------------------

#pragma once

#include <Eigen/Core>

//---- Define assertion handler. Defaults to calling assert().
// If your macro uses multiple statements, make sure is enclosed in a 'do { .. } while (0)' block so
// it can be used as a single statement.
// #define IM_ASSERT(_EXPR)  MyAssert(_EXPR)
//#define IM_ASSERT(_EXPR)  ((void)(_EXPR))     // Disable asserts

//---- Define attributes of all API symbols declarations, e.g. for DLL under Windows
// Using dear imgui via a shared library is not recommended, because of function call overhead and
// because we don't guarantee backward nor forward ABI compatibility.
// #define IMGUI_API __declspec( dllexport )
// #define IMGUI_API __declspec( dllimport )

//---- Don't define obsolete functions/enums/behaviors. Consider enabling from time to time after updating to avoid using soon-to-be obsolete function/names.
// #define IMGUI_DISABLE_OBSOLETE_FUNCTIONS

//---- Disable all of Dear ImGui or don't implement standard windows.
// It is very strongly recommended to NOT disable the demo windows during development. Please read
// comments in imgui_demo.cpp.
//#define IMGUI_DISABLE                                     // Disable everything: all headers and source files will be empty.
//#define IMGUI_DISABLE_DEMO_WINDOWS                        // Disable demo windows: ShowDemoWindow()/ShowStyleEditor() will be empty. Not recommended.
//#define IMGUI_DISABLE_METRICS_WINDOW                      // Disable debug/metrics window: ShowMetricsWindow() will be empty.

//---- Don't implement some functions to reduce linkage requirements.
//#define IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCTIONS   // [Win32] Don't implement default clipboard handler. Won't use and link with OpenClipboard/GetClipboardData/CloseClipboard etc.
//#define IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCTIONS         // [Win32] Don't implement default IME handler. Won't use and link with ImmGetContext/ImmSetCompositionWindow.
//#define IMGUI_DISABLE_WIN32_FUNCTIONS                     // [Win32] Won't use and link with any Win32 function (clipboard, ime).
//#define IMGUI_ENABLE_OSX_DEFAULT_CLIPBOARD_FUNCTIONS      // [OSX] Implement default OSX clipboard handler (need to link with '-framework ApplicationServices', this is why this is not the default).
//#define IMGUI_DISABLE_DEFAULT_FORMAT_FUNCTIONS            // Don't implement ImFormatString/ImFormatStringV so you can implement them yourself (e.g. if you don't want to link with vsnprintf)
//#define IMGUI_DISABLE_DEFAULT_MATH_FUNCTIONS              // Don't implement ImFabs/ImSqrt/ImPow/ImFmod/ImCos/ImSin/ImAcos/ImAtan2 so you can implement them yourself.
//#define IMGUI_DISABLE_DEFAULT_FILE_FUNCTIONS              // Don't implement ImFileOpen/ImFileClose/ImFileRead/ImFileWrite so you can implement them yourself if you don't want to link with fopen/fclose/fread/fwrite. This will also disable the LogToTTY() function.
//#define IMGUI_DISABLE_DEFAULT_ALLOCATORS                  // Don't implement default allocators calling malloc()/free() to avoid linking with them. You will need to call ImGui::SetAllocatorFunctions().

//---- Include imgui_user.h at the end of imgui.h as a convenience
// #define IMGUI_INCLUDE_IMGUI_USER_H

//---- Pack colors to BGRA8 instead of RGBA8 (to avoid converting from one to another)
// #define IMGUI_USE_BGRA_PACKED_COLOR

//---- Use 32-bit for ImWchar (default is 16-bit) to support full unicode code points.
// #define IMGUI_USE_WCHAR32

//---- Avoid multiple STB libraries implementations, or redefine path/filenames to prioritize another version
// By default the embedded implementations are declared static and not available outside of imgui
// cpp files.
//#define IMGUI_STB_TRUETYPE_FILENAME   "my_folder/stb_truetype.h"
//#define IMGUI_STB_RECT_PACK_FILENAME  "my_folder/stb_rect_pack.h"
// #define IMGUI_DISABLE_STB_TRUETYPE_IMPLEMENTATION
// #define IMGUI_DISABLE_STB_RECT_PACK_IMPLEMENTATION

//---- Unless IMGUI_DISABLE_DEFAULT_FORMAT_FUNCTIONS is defined, use the much faster STB sprintf
// library implementation of vsnprintf instead of the one from the default C library.
// Note that stb_sprintf.h is meant to be provided by the user and available in the include path at
// compile time. Also, the compatibility checks of the arguments and formats done by clang and GCC
// will be disabled in order to support the extra formats provided by STB sprintf. #define
// IMGUI_USE_STB_SPRINTF

//---- Define constructor and implicit cast operators to convert back<>forth between your math types and ImVec2/ImVec4.
// This will be inlined as part of ImVec2 and ImVec4 class declarations.
#define IM_VEC2_CLASS_EXTRA           \
    ImVec2(const Eigen::Vector2f& f)  \
    {                                 \
        x = f.x();                    \
        y = f.y();                    \
    }                                 \
    operator Eigen::Vector2f() const  \
    {                                 \
        return Eigen::Vector2f(x, y); \
    }

#define IM_VEC4_CLASS_EXTRA                 \
    ImVec4(const Eigen::Vector4f& f)        \
    {                                       \
        x = f.x();                          \
        y = f.y();                          \
        z = f.z();                          \
        w = f.w();                          \
    }                                       \
    operator Eigen::Vector4f() const        \
    {                                       \
        return Eigen::Vector4f(x, y, z, w); \
    }


//---- Use 32-bit vertex indices (default is 16-bit) is one way to allow large meshes with more than
// 64K vertices.
// Your renderer back-end will need to support it (most example renderer back-ends support both 16/32-bit indices).
// Another way to allow large meshes while keeping 16-bit indices is to handle ImDrawCmd::VtxOffset
// in your renderer. Read about ImGuiBackendFlags_RendererHasVtxOffset for details.
// #define ImDrawIdx unsigned int

//---- Override ImDrawCallback signature (will need to modify renderer back-ends accordingly)
// struct ImDrawList;
// struct ImDrawCmd;
// typedef void (*MyImDrawCallback)(const ImDrawList* draw_list, const ImDrawCmd* cmd, void*
// my_renderer_user_data); #define ImDrawCallback MyImDrawCallback

//---- Debug Tools: Macro to break in Debugger
// (use 'Metrics->Tools->Item Picker' to pick widgets with the mouse and break into them for easy
// debugging.)
// #define IM_DEBUG_BREAK  IM_ASSERT(0)
// #define IM_DEBUG_BREAK  __debugbreak()

//---- Debug Tools: Have the Item Picker break in the ItemAdd() function instead of ItemHoverable(),
// (which comes earlier in the code, will catch a few extra items, allow picking items other than
// Hovered one.) This adds a small runtime cost which is why it is not enabled by default.
// #define IMGUI_DEBUG_TOOL_ITEM_PICKER_EX

//---- Debug Tools: Enable slower asserts
// #define IMGUI_DEBUG_PARANOID

//---- Tip: You can add extra functions within the ImGui:: namespace, here or in your own headers
// files.
/*
namespace ImGui
{
    void MyFunction(const char* name, const MyMatrix44& v);
}
*/
